Not returning to prompt after upstart job

Hi all,

having several keyboards on my desk and being used to using the Ctrl-Alt-Del combination to call up the login window of Windows XP, several times I quite unintentionally succeeded in restarting the ubuntu server I'm experimenting with

A bit of googling revealed I should edit the /etc/inittab, but there is no such file in ubuntu 11.10 (Oneric). Further googling revealed the more ubuntu specific file /etc/event.d/control-alt-delete, which also didn't exist. But looking through /etc I discovered that the init directory contained a file named control-alt-delete.conf.

It works fine, except for one small irritation. After output of the message "Shutdown / restart with Ctrl-Alt-Del is disabled!" it seems to hang, and the user is forced to press ENTER to return to the normal bash or login input prompt.

Is there any way to change this behavior? Or is this the normal behavior of upstart scripts?